# Send to X4 vs Sutra

The clearest difference is rating: Send to X4 at 5.0 against Sutra's 4.3. Send to X4 also leads on in-app purchases (none vs 4) and review sentiment (100% vs 73%). Sutra's advantage is ratings volume (17 vs 5). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Sutra sells 4 one-off in-app purchases. Send to X4 asks for nothing beyond the download.

Send to X4 holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 5 and 17 respectively. Written reviews point the same way: 100% of Send to X4's written reviews are positive against 73% of Sutra's.

Send to X4 ships an update daily, Sutra weekly. Both last shipped on October 31, 2026.

## The numbers

| Metric | Send to X4 | Sutra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/send-to-x4/id6758729873/reviews)** | [4.3 (17 ratings)](https://appshunter.io/ios/app/sutra-ebook-and-comic-reader/id6780096864/reviews) |
| Number of ratings | 5 | **17** |
| Positive reviews | **100.0% of reviews** | 73.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Weekly |
| Monetization | Free | Free |
| Size | 34 MB | 42 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jaime Chapinal](https://appshunter.io/developer/1855881822) | [Koustav Dasgupta](https://appshunter.io/developer/6772577121) |

## What reviewers say

### Send to X4

[App page](https://appshunter.io/ios/app/send-to-x4/id6758729873)

Wirelessly send articles, notes, and custom screensavers to your e-ink reader. Convert web content to EPUBs, import your own files, and manage content directly on the device. Enjoy a private, cloud-free experience over local WiFi.

**Highlights:** Convert articles to EPUB, Import custom EPUB files, Send text notes, Design custom screensavers, Browse e-ink wallpapers, Manage device files

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Sutra

[App page](https://appshunter.io/ios/app/sutra-ebook-and-comic-reader/id6780096864)

Access your entire book collection from various sources in one beautiful app. Enjoy a customizable reading experience with synced progress, bookmarks, and highlights across devices. Organize your library with series info, search, and collections.

**Highlights:** Connect Kavita, Calibre, and OPDS servers, EPUB and PDF reading with page-curl effect, Rich typography and reading themes, iCloud sync for progress, bookmarks, and highlights, Offline downloads, Highlighting and search functionality, Series grouping and collections

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $1.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Large Tip | $4.99 | one-time |
| Sutra Pro | $6.99 | one-time |


## Frequently asked questions

### Is Send to X4 free?

Send to X4 is free to download, with no in-app purchases.

### Is Sutra free?

Sutra is free to download, with in-app purchases available.

### Which has better reviews, Send to X4 or Sutra?

Send to X4 is rated higher. Send to X4 averages 5.0 out of 5 from 5 ratings, while Sutra averages 4.3 from 17 ratings.

### Do Send to X4 or Sutra have ads?

Neither Send to X4 nor Sutra shows ads.

### Which is updated more often, Send to X4 or Sutra?

Send to X4 ships an update daily, and Sutra weekly. Most recently, Send to X4 was updated on October 31, 2026 and Sutra on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*